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A time resolved intense pulsed light spectral analysis system.

D M Clarkson1, D Gill, M Odeke

  • 1Department of Clinical Physics and Bioengineering, Arden Cancer Centre, Walsgrave Hospital, Coventry, CV2 2DX, UK. Douglas.clarkson@uhcw.nhs.uk

Lasers in Medical Science
|May 1, 2007
PubMed
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A new measurement system verifies intense pulsed light (IPL) spectral output and pulse waveforms, crucial for clinical applications. This system uses optical filters and photodiodes for accurate IPL device calibration and performance assessment.

Area of Science:

  • Biomedical Engineering
  • Optical Physics

Background:

  • Intense pulsed light (IPL) systems are widely used in clinical settings.
  • Current IPL product support lacks spectral content and pulse waveform verification.
  • Accurate characterization is essential for safety and efficacy in therapeutic applications.

Purpose of the Study:

  • To develop and validate a measurement system for characterizing IPL spectral output.
  • To enable verification of pulse waveforms for IPL devices.
  • To address the gap in product support and calibration for IPL systems.

Main Methods:

  • A system utilizing 11 broadband optical filters (450-950 nm) and silicon photodiodes was designed.
  • A low-cost 8-channel USB data capture module interfaced with a laptop recorded signals.

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  • Individual filter channels were calibrated using a spectroradiometer and a reference light source.

    • Main Results:

    • The system successfully captured and analyzed spectral components and pulse profiles of IPL sources.
    • Initial measurements of a Lumenis One IPL system were performed.
    • The developed system provides a method for detailed IPL output analysis.

    Conclusions:

    • The developed measurement system offers a viable solution for verifying IPL spectral content and pulse waveforms.
    • This technology can enhance the calibration and quality control of IPL devices.
    • Accurate characterization supports improved clinical outcomes and device safety.